Clegg J <br/><br/>
Freahwater life 

 - London  Frederick Warne and Co.        1974 
 - x,283p.  cm. 
<br/><br/><label>Standard No.: </label>44037 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Fresh water<br/>Biology
<br/><br/><label>Dewey Class. No.: </label>G9557, L4